Lab_4_Neuroanatomy

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University of Texas *

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446L

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Biology

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Apr 3, 2024

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Neuroanatomy 0 o BIO 446L Human Microscopic & Gross Anatomy Laboratory Manual Spring 2023 Visible Body Team Soroosh Sadeh, M.S. Gonie Altman, B.S. Supplies and Equipment: All students must wear long pants and closed toe shoes in lab. Please do NOT bring FOOD OR DRINK into lab.
Neuroanatomy 1 o Lab 4: Neuroanatomy Objectives: 1. Know the major bones of the human skull and be able to identify them. 2. Be able to palpate the major landmarks of the skull. 3. Understand the foramina of the skull, its importance, and structures passing through the foramen magnum. 4. Be able to identify the different parts of the human brain and know their function. 5. Be familiar with the connective tissue covering of the human brain. 6. Be familiar with the sinuses of the skull.
Neuroanatomy 2 o Section: The Human Skull Resources to use: Visible Body Human Anatomy Atlas App. Activity 1: The Skull Your main resource during this lab will be the Human Anatomy Atlas Application, please keep this open while you work through the activities. Looking at the top of the screen, click the Skeletal System Views and select View 2. Of the skull and locate the following bones and bone markings. After identifying each bone with its landmark, locate them on the skull model on your table. Can you palpate any of them on your head? The skull is composed of two parts: the cranium and the facial bones. The cranium is responsible for protecting the brain, while the facial bones form the framework of the face and support the special senses (sight, smell, and taste). Label the image below with the structures you just learned about in the previous activity (please note that sphenoid is part of the cranium). 1. Cranial bones a. Select the frontal bone, which is located in the forehead region on the anterior and superior part of the skull. Use the landmark icon in the content box to the right of the page and locate the following bone markings: o Supraorbital notch o Supraorbital margin o Glabella
Neuroanatomy 3 o o Zygomatic process b. Rotate the skull to see the lateral side and select the right or left parietal bone located on the lateral and superior part of the skull. c. Select the right or left temporal bone , which is located immediately inferior to the parietal bone. d. Use the landmark icon in the content box on the right side of the page to locate the following bone markings and label the image below: Processes: Foramen: Meatus: Fossa: Others: Zygomatic Styloid Mastoid * note the zygomatic process of the temporal Jugular Lacerum *Both are on the temporal surface External Auditory Internal Auditory *Both are part of the acoustics of the ear Mandibular Jugular Petrous part Carotid Canal
Neuroanatomy 4 o bone is different from the process of the frontal bone e. Where does the lower jaw attach to the skull? o Temporal base f. Where do sound waves enter the ear? o Temporal external auditory cannal
Neuroanatomy 5 o g. Continue to rotate the skull and select the occipital bone , located on the posterior side of the skull. h. Use the landmark icon in the content box on the right side of the page to locate the following bone markings and label the image below: o Foramen magnum o Hypoglossal canal o Occipital condyle o Condyloid foramen o External occipital protuberance o Inferior nuchal line o Superior nuchal line o Jugular foramen (occipital surface) o Foramen lacerum (occipital surface) i. What structure passes through the foramen magnum? Spinal cord j. What structure is responsible for articulating with the vertebral column? craniovertebral joint k. Rotate the skull to look at the superior (top) surface. Select and hide the frontal bone and the two parietal bones and choose the sphenoid bone shaped like a butterfly (or a bat!). l. Use the landmark icon in the content box on the right side of the page to locate the following bone markings and label the image below: o Greater wing o Lesser wing o Sella turcica o Optic foramen o Superior orbital fissure o Inferior orbital fissure (sphenoid surface) o Foramen rotundum o Foramen ovale o Foramen spinosum o Foramen lacerum (sphenoidal surface) o Medial pterygoid plate o Lateral pterygoid plate
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